Poc joint vpd system elbowpocs joint vpd system elbow is a 2 ply stretchy elbow protector it features a highly proficient ventilation system for optimal moisture management and comfort the outer fabric is made of high resolve polyamide yarns to ensure low friction and high abrasion resistance vpd is the ultimate material for mtb as it wraps around the body shape when warm for greater freedom of movement on the bike upon impact the vpd technology hardens to minimise injury featureslow fri